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Installing notes about active infrared beam sensors

Author:    Source:    Date: 2016-07-01 11:03:07
1 installation distance is too close, it is recommended to use a rough alignment (on receiver, better is 5-6 LED in lighting); otherwise, the sensitivity is too high to cause the infrared block, can not trigger the alarm;
  2 installed on the outdoor wall, it is recommended to avoid direct sunlight, as far as possible away from tall trees; otherwise, because the sun is straight, or shaking the branches, birds cause frequent false positives.
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